Delhi’s air quality slipped into the hazardous range as dense smog enveloped the city, pushing the AQI to 461 and reducing visibility. Several NCR cities also recorded severe pollution, prompting health concerns and low-visibility procedures at the IGI Airport.
CPCB's Sameer app data, which provides hourly AQI updates, showed that out of 38 monitoring stations, 18 were in the 'severe' category with readings above 400